Electric fence controller



May 9, 1939. F. BUCK ELECTRIC FENCE CONTROLLER Filed March 26, 1956 T6?6 l o o 9 w' Patented May 9, 1939 2,157,160

UNITED STATES PATENT OFFICE mm Fi'filliiiamm' Foster Buck. rel-go, N.Dak. Applicant; $23 101. 17 265) o. i

This invention relates to improvements in electhrough which a signallamp may be viewed for trio fences and has as an object to provide imthepurpose of indicating a grounded condition of. proved mechanism forintermittently energizing the fence.

4 afence wire. One side wall of the cabinet mounts two ter- 7 As is wellknown, electric fences consist of one minals 8 to which the conductorsleading from a or more bare wires mounted on insulated supports, batteryare attached. The opposite side wall has and mechanism for electrifyingor energizing the three terminals 9, Hi, and H mounted thereon, wire sothat an animal contacting the wire comthe first two being for theattachment of fence pletes a circuit to the ground and receives a shock.wires and the latter providing a ground connec- Past experience hasshown that it is desirable tion. A push button ll exposed on the front10 to apply the energizing current to the fence interpanel providesmeans for setting the mechanism mittently so that the animal hasopportunity to in operation as will be hereinafter described. freeitself. The actual circuit arrangement of the invention,-

It is,therefore, afurther object of this invention as exempl fi d y theembodiment of h v II to provide simple means for periodically closingtion shown in Figure 2, comprises a transformer R5 the energizingcircuit to effect this desirable !2 having a pr ary 3 a d a s d y Tresult. secondary M has one side connected to a fence While electricfences in the .past have been wire l5 and its other side grounded asshown. In energized both from commercial sources of alterpractice, oneen of the Secondary is connected to nating current and from batteries,some difhcult the two terminals 9 and In on the cabinet and its 20 hasbeen experienced with the battery op rat d other end is electricallyconnected to the terequipment; and this invention, therefore, contemm nl 0- plates as another object the provision of an elec- T0 Provide anindication of W h n he trio fence which is so designed that'it may be seo a y H h s v a signal amp I6 s co 26 economically and satisfactorilyoperated from a netted across its rm n to indi e a battery. groundedcondition of the fence, a signal lamp [1 with the above and otherobjects in vi w i h is interposed between the fence and the transwillappear as the description proceeds, this invenformer. This latter signalis preferably mounted tion resides in the novel construction,combination back of the Window 1 in the cabinet 50 a a 30 andarrangement of parts substantially as hereingrounded condition of thefence may be observed 30 after described, and more particularly definedby from a distance. the appended claims, it being understood that. One dof the primary s connected hrou h a such changes in the preciseembodiment of the Vibrator is with One Side Of a b y Thi hereindisclosedinvention may be made as 'come' vibrator is positioned to be actuated bythe transwithin the scope of the claims. former l2. The opposite side ofthe primary is 35 The accompanying drawing illustrates t connected bymeans of a conductor 28 with two plete examples of the physical embodi tof t stationary terminals 2! and 22 and also with one inventionconstructed in accordance with the best Side of a condenser modes so fardevised for the practical appli ti Cooperating with the contact 2| is amovable 40 of t principles thereof, and in which; contact 24 carried bya pendulum 25. The lower 40 Figure 1 is a fr t plan View of a cabinet inweighted end 26 of the pendulum is positioned to which the energizingmechanism is enclosed; be attracted by the energized transformer l2.

Figure 2 is a diagrammatic illustration of one with Swinging of thependulum the Contact complete embodiment of the invention; and 2: 3 gg terilgagiq with 32 we 3 a or 2. sweetener time another embodiment of theinvention. p p

Referring now particularly to the p y a conductor 21 with the oppositeside of the battery. ing drawing in which like numerals indicate likeHence, it will be Seen that dun-Hg operation 0 parts, the numeral 5designatesa cabinet generally with the pendulum swinging back and fo ththe of sheet metal construction in which the energizprimary t; isperiodically closed and opened i s mechanism of the fence is housed- Thecabi- At the same time, the vibrator I8 is set in operanet may e o d iany suitable location by tion to very rapidly open and close the primarymeans of hanger straps 6. The front panel of the circuit during, eachclosure thereof effected by the cabinet is provided with a window oropening I pendulum. Hence alternating current is induced 55 in thesecondary tion of the fence.

The condenser 23, as shown, is connected across the contacts 2! and 24to prevent arcing thereat; and to set the mechanism in operation, thepush I4 to efl'ect the desired energiza- .button, switch H is providedto bridge the contact 22 and a cooperating contact 28 electricallyconnected with the conductor 21.,

Another manner of utilizing the principles of this invention isillustrated in Figure 3. In this instance, the transformer H." has splitprimaries 30 and correspondingly arranged secondaries 3|. The outer endsof the secondaries are connectible with the terminals 3 and III forconnection with the fence wire and the other ends of the secondaries areconnected through a signal lamp 32 with the ground terminal "I.

One side of the series connected primaries is directly connected to thebattery I 9 by a con doctor 33. The other side of the series connectedprimaries is connected with the upper one of two stationary contacts 34of a vibrator 35 mounted in juxtaposition to a solenoid 36 to beactuated thereby. The movable contact of the vibrator is connected witha stationary contact 31 positioned at one side of a pendulum 38 to beengaged by the pendulum carried contact 39 as the pendulum swings.

The weighted end 40 of the pendulum is positioned to be attracted to thesolenoid 36 when the same is energized. Energization of the solenoid iseffected by having one side thereof connected with the battery l9through conductor 33 and by connecting the opposite side thereof withthe battery through a conductor 4| and eitherthe pendulum switch 42 orthe push button switch I I, both being connected with the batterythrough a conductor 43.

Hence, when the mechanism is in operation and the pendulum is swinging,every time engagement is efiected between its contact 39 and thestationary contact 42, current flows through the solenoid 36 to attractthe pendulum and also actuate the vibrator 35.

Every time the vibrator engages its upper contact 34 and the pendulumcontact 39 engages the stationary contact 31, current flows through theprimaries 30. Also, every time the contact 39 engages the stationarycontact 31 and the vibrator contact engages the lower one of its twostationary contacts 34, current flows through solenoid 36.

Arcing at the pendulum and vibrator contacts is minimized by theprovision of a condenser 44 connected across these contacts, as shown.

From the foregoing description taken in connection with the accompanyingdrawing, it will be readily apparent to those skilled in the art thatthis invention provides a novel manner of effectingintermittenten-ergization of an electric fence and that by the circuitarrangements employed, economical and satisfactory battery operation isassured.

I claim:

1. Means for energizing an electric fence comprising: a transformerhaving primary and secondary windings; means for connecting theterminals of the secondary winding with a fence to be energized and theground; a primary circuit connected with the terminals of the primarywinding; a source of E. M. F. connected in said primary circuit; avibrator for intermittently opening and closing the primary circuit withgreat rapidity so as to induce an alternating current in the secondarycircuit; a pendulum-controlled switch for periodically and slowlyopening and closing said primary circuit; and a single electromagneticmeans energized from the primary circuit for actuating the vibrator andfor keeping the pendulum in motion.

2. An electric fence controller comprising a transformer, a vibrator forinterrupting the flow of current through the transformer, a vibratingcircuit breaker connected in series with said vibrator, a core for thetransformer adapted to attract the vibrator and the vibrating circuitbreaker, and an armature for the vibrating circuit breaker of massiveWeight for periodically opening the circuit to the transformer after atime interval in which the vibrator has been actuated, the structure andarrangement being such that an alternating current will be delivered bythe transformer and periodically this current will be interrupted byopening of the circuit breaker.

FOSTER. BUCK.

